Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
trist
←
Proto-Indo-European
*tréystis
(inherited)
←
Italian
tristo
(mention)
←
Latin
trīstis
(inherited)
←
Romanian
trist
(mention)
←
Sardinian
tristu
(mention)
→
Catalan
tristesa
(suffix)
→
Catalan
tristor
(affix)
→
Catalan
tristament
(suffix)
→
Catalan
entristir
(affix)
→
Italian
tristo
(cognate)
→
Romanian
trist
(cognate)